PIN Generator
Generate random secure numeric PINs.
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PIN Generator creates a random six-digit PIN each time you press Generate PINs. Use it when you need a fresh code for a phone or app lock, a digital locker, a door keypad, or a UPI PIN where your bank allows six digits. Pressing the button again replaces the PIN with a new one.
What you get
- Six digits, each chosen independently, so zeros can appear anywhere, including at the start, as in 050731.
- One PIN per press, shown in the Result box with a Copy result button.
- Nothing is remembered: once you leave or refresh the page, the PIN is gone.
The digits come from the Web Crypto API, the same random source browsers use to create encryption keys, rather than the predictable Math.random function.
Why a random PIN beats a personal one
People tend to pick PINs they can remember, and attackers know it. The first guesses are always the same families:
- Birthdays and anniversaries written as DDMMYY or DDMM
- Years such as 1990 or 2001
- Repeats and runs like 000000, 111111 and 123456
- Keypad shapes, such as 2580 straight down the middle of a phone keypad
- The last digits of your mobile number or vehicle registration
A generated PIN has no link to your life, so none of these shortcuts help anyone guess it.
Four digits or six?
Banks and devices lock a PIN after a few wrong attempts, which is what makes short PINs workable. Even so, length makes a big difference:
| PIN length | Combinations | Chance of guessing in 3 tries |
|---|---|---|
| 4 digits | 10,000 | 0.03% |
| 6 digits | 1,000,000 | 0.0003% |
In information terms, six random digits carry about 19.9 bits of entropy against 13.3 bits for four. If a card or app only accepts four digits, use the first four digits of a generated PIN; any four digits from a random PIN are just as random.
Using a generated PIN safely
- Regenerate obvious patterns. Random output occasionally looks like 112233 or 909090. It is still random, but a human guesser might try it, so press the button again.
- Use a different PIN for each card and app. One leaked PIN should not open everything.
- Memorise it, then clear it. Do not write it on the card or keep it in your phone's notes.
- Change it if it may have been seen. If someone could have watched you type it, set a new one straight away.
- Never share a UPI PIN. It is only needed to send money, never to receive it, so anyone asking for it to "credit" you is attempting fraud.
For account logins, a PIN is not enough; the password generator creates long random passwords instead. The PIN is created in your browser and is not sent to a server.